Hose coupling device



March 21, 1944 E. H. sHAFF 2,344,740

HOSE COUPLING DEVICE Filed Aug. l, l1942 L .56 4 5 54 55 55x 4 2. ZZ

l 29 27 76 w3 28 /Z/W j/Q/ Patented Mai'.l 21, 1944 l OFFICE nosa coUPLING :DEVICE Ernest H. Shaft, Grand Haven, Mich., assigner to Keller Tool Company, Grand a corporation of Michigan Haven, VMich.,

Application August 1, 1942, serial No. 453,166

(ci. ass-169) 4 Claims.

The invention relates to hose coupling devices and the general aim oi' the invention is to provide a coupling which is adapted to be quickly connected or disconnected yet will securely lock the hose sections together.

Another Objectis to provide a new and improved coupling device of this nature embodying a nipple and a coupling structure arranged to be interconnected in'fluid tight relation and having novel locking means retractable for assembly of the nipple and coupling structure and having a locking engagement with the nipple released only by intentional manipulation of a member which exerts a pull on the locking meansand rocks or swings it out of engagement with the nipple.

Other objects and advantages will become apparent in the following description and from the accompanying drawing, in which:

Figure l is a view in axial section through a coupling device embodying the features of the Iinvention showing the relationship of the parts just priorto assembly. l

Fig. 2 is a similar view but showing the assembly completed. i I

Figs. 3 and 4 are transverse sectional views taken respectively along the lines 3-3 `and 4 4,

- it is to lbe understood` that' I do not thereby intend to limit the invention to thespecic form (disclosed, but intend to coverall modifications and alternative constructions falling within the' `spirit and scope of the invention as'expressed in the appended claims. Y

In the exemplary embodiment ofthe inven- I y tion shown` in` the drawing, the numerals I and II respectively designate the nipple and the coupling structure generally. The nippleis a tubular member having one end I2 fashioned for` connection `with a hose section. Its other end has a. terminal portion I3 of somewhat reduced structure has a tubular housing I8 internally screw threaded at one end, as at I 8, for engagement with external threads on an end oi' a hose couplerZIi. The coupler, as shown, is a tubular t member having a tapering screw threaded 'socket 2| for receiving a hose nipple. an external annular flange 22 about midway of its length andA 'a smooth end portion 2l snugly fitting within `stricted end I3 of the nipple to hid it against diameter ending `at an'annular rib' Il having an arcuate `or angular surface I5 facing generally in the direction of the portionl|3 and an angularly outwardly and oppositely directed surface I6. The angular surface I6 defines one side of an annular groove I'I.

The coupling l structure: includes'` means for locking engagement withthegroove I1 on rthe nipple arranged to -be quickly retracted to permit ofinstant assembly and disassembly. The

radial movement in assembly and to guide its entrancemovement through the gasket. Preferably the outer face of,the rib is somewhat angular, as at 28, to guide the nipple into thiefl opening through the rib. y y

` A valve 21, located in the chamber 28 denned by the inner end of the hose couplerlil, comprlsesfin'this instance, a head 29 arranged to seat againstY the inner face oi' the gasket 24 and having spaced axially directed projections 30 (Fig. 4) thereon extending into the opening through the gasket. The valve may be normally closed by a coil spring 3| bearing between the valve head and an internal shoulder 32 on the hose coupler. Engagement of the projections by the end of thenipple unseats .the valve and allows uid or gas to flow between the projections into the nipple. If desired, the headmay be `of sucha circumferential formas hexagonal to provide `clearance .between the head and the walls opposed thereto. .Moreoven by Properly dimensioning the head the angular corners thereof may have slidingvengagement with the opposing t walls to guide the valve accurately in its movements. In such a structure the valve-seating1 spring may be omitted inasmuch as the gas or fluid pressure on the head will seat it.

Means for locking the inserted nipple in the coupling structure is provided which is retractablemanually orjby the insertion of the nipple into the housing to permit the nipple to pass to its coupledposition and which may be retracted only by manipulation to release the' nipple. At circumferential]y spaced intervals the housing I8 vhas angularlytransverse bores 38 therein which device are substantially the same. l Each bore said memberto tiit therein. said member its projected position being adapted for holding engagement with an interfi'tting part of the coupling device.

4. In a coupling device of the character described, the combination of a tubular housing arranged to receive a nipple therein, said housing having a -bore therein angularly related Ato the axis of the housing, a rigid locking member loosely disposed in said bore. said locking member bel0 ing movable from an operative position in which an end thereof extends into the interior of said housing to a retracted position by combined longitudinal sliding and lateral rocking movement, means urging said locking member into said operative position thereof, and means i'or imparting'l a. combined rocking and longitudinal movement to said lockingr member to shift it to said retracted Position.

ERNEST H. SHAFT'. 

